You are probably right but i've became a bit paranoid after what happened (they are currently trying to access many of my excange accounts), like, for example, what if the hacker sees that i'm trying to regain access to my account and edits the post with my btc address? It whould be a disaster for me.
There are literally archive sites available to save the address. If you use archive.is and save the page then sign a message you have nothing to fear. Also, posts will be dotted to show any edits and one can hover over it to have a tooltip that displays the date and time of edit.